InsideClimate: A well-heeled coalition of investors is asking top fossil fuel companies to calculate the risks of plowing billions into new oil, gas and coal projects. They fear that carbon emission limits and slowing demand will turn them into bad investments that leave investors worse off. The requests, contained in letters sent to 45 companies [3] last month, are part of an initiative aimed at persuading oil producers and others to rein in their quest to stockpile more carbon energy. They hope to do so by tapping...